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Roy Johnson, Great Britain (UK) - Tube collection

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ID = 5944
Photo Roy Johnson

Below you find a part of the tube collection Roy Johnson.

Collector of Valves and old Scientific, Test and Radio Equipment. Interests are mostly in British valves.
Result: 271 to 300 from 415
 
Sort order:  [ Name | Maker | Year | Type | Country ]

Excerpt from the tube collection of Roy Johnson. These images (tube photos) were uploaded to the respective tubes or valves by Roy Johnson.

click to access the tube page
HL13_Mullard
Mullard Radio Valve Co. Ltd.; GB
Mazda Version.  Heavy gettering reduces visibility.
HL210 1928
Common type Great Britain tu... GB
click to access the tube page
K30G
Ever Ready Co. (GB) Ltd.; Lo... GB
click to access the tube page
LD210
Tungsram; Budapest (see also... H
click to access the tube page
LP2
Marconi-Osram - (Valves/Tube... GB
click to access the tube page
LS5B
MO Valve Co. Ltd.; GB GB
click to access the tube page
LS30
Telefunken Deutschland (TFK)... D
The Catkin Version - I  tested it in 1957 and it still fine!
MH4Cat
Marconi-Osram - (Valves/Tube... GB
click to access the tube page
NR7A
MO Valve Co. Ltd.; GB GB
click to access the tube page
NR16A
Common type Great Britain tu... GB
click to access the tube page
NR44
Common type Great Britain tu... GB
click to access the tube page
NR50
Common type Great Britain tu... GB
click to access the tube page
NR94
Common type Great Britain tu... GB
click to access the tube page
P61
Mazda = Valve (Tube) brand G... GB
click to access the tube page
PA1
Brimar (STC); Foots Cray GB
click to access the tube page
PA20
Mazda = Valve (Tube) brand G... GB
click to access the tube page
PM1A
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
PM2 1935
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
PM2A
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
PM2HL
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
PM202
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
PM252
Mullard Radio Valve Co. Ltd.; GB
click to access the tube page
Power
Some early PX4 had an angled structure.
Not easily seen in almost totally silvered balloon envelopes.
The Post office claimed that this stucture gave a longer life in telephone repeater applications.
PX4
Marconi-Osram - (Valves/Tube... GB
Some various shapes of the PX25
PX25
Marconi-Osram - (Valves/Tube... GB
R-Type, probably Osram
R_Osram
Common type Great Britain tu... GB
R5V with BBC mark.  From 1924 box.
R5V 1925
MO Valve Co. Ltd.; GB GB
click to access the tube page
SP230
Tungsram; Budapest (see also... H
click to access the tube page
StentorTwo
Cossor, A.C.; London GB
click to access the tube page
UY227 1927
Common type USA tube/semicond. USA
Result: 271 to 300 from 415
 

Tube collector page of valve collector Roy Johnson as «own HP at RMorg»
As a member of Radiomuseum.org Roy Johnson displays items in his/her tube collection. Tubes are called valves in British oriented countries.
Valve and tube collectors as well as radio collectors are invited to join Radiomuseum.org. Every member can display separate collections of tubes, radios etc.

Roy Johnson started his/her tube collection (valve collection) here on 13.Oct.2006. [index-en]

  
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